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1、河南農(nóng)業(yè)科學(xué),2014,43(6):157—160JournalofHenanAgriculturalSciences豆渣中水溶性大豆多糖的性質(zhì)及應(yīng)用研究汪洪濤,陳成,石雪萍,李小華(江蘇經(jīng)貿(mào)職業(yè)技術(shù)學(xué)院食品系/江蘇省食品安全工程技術(shù)研究開(kāi)發(fā)中心,江蘇南京211168)摘要:對(duì)先用堿預(yù)處理豆渣再用酸法提取出的豆渣水溶性大豆多糖(SSPS)的抗氧化性、抑茵性和對(duì)酸性乳飲料的穩(wěn)定性進(jìn)行了研究。結(jié)果表明:SSPS對(duì)DPPH自由基的清除率隨其質(zhì)量濃度的增大而增大,SSPS質(zhì)量濃度為0.2g/L時(shí),清除率為42;SSPS對(duì)大腸桿菌、金黃色葡萄球
2、菌、沙門(mén)氏茵和蠟樣芽苞桿菌均有一定的抑制作用,且隨SSPS質(zhì)量濃度的增加,其抑茵效果增強(qiáng);SSPS對(duì)酸性乳飲料有一定的穩(wěn)定作用,當(dāng)SSPS添加量為6g/L時(shí),酸性乳飲料的離心沉淀率小于3%,懸浮穩(wěn)定性接近0.5,其穩(wěn)定效果與果膠接近;SSPS作穩(wěn)定劑時(shí),酸性乳飲料的黏度較?。籶H值為3.4~4.4時(shí),酸性乳飲料的沉淀率為2.8O~3.15,懸浮穩(wěn)定性為0.47~0.49。從豆渣中提取的SSPS可以作為天然的抗氧化劑、防腐劑、增稠劑添加到食品中,也可作為酸性乳飲料的穩(wěn)定劑。關(guān)鍵詞:豆渣;水溶性大豆多糖;抗氧化性;抑菌性;穩(wěn)定性中圖分類(lèi)號(hào)
3、:TS214.9文獻(xiàn)標(biāo)志碼:A文章編號(hào):1004—3268(2014)06—0157—04StudyonPropertyandApplicationofWater—solubleSoybeanPolysaccharideinBeanDregWANGHong—tao,CHENCheng,SHIXue—ping,LIXiao—hua(ResearchandEmpolderCenterofFoodSafetyProjectofJiangsuProvince,F(xiàn)oodDepartment,JiangsuInstituteofCommerce,
4、Nanjing211168,China)Abstract:Theoxidationresistance,antibacterialactivityandstabilizingeffectonacidmilkbever—ageofbeandregwater—solublesoybeanpo1ysaccharides(SSPS)frombeandregtreatedwithalkaliandthenextractedunderacidicconditionwerestudiedinthispaper,SOastoprovidetheore
5、tica1basisforitsapplicationinfoodindustry.TheresultshowedthattheclearanceeffectofSSPSonDPPHincreasedwiththemassconcentrationofSSPSincreasing.whenthemassconcentrationwas0.2g/Litsclearanceratewas42.SSPShadcertaininhibitiontoEscherichiacoli。Salmo—nella,Staphylococcusaureus
6、andBacilluscereus,andtheantibacterialactivityincreasedwiththeincreaseofthemassconcentrationofSSPS.SSPShadcertainstabilizingeffectonacidmilkbever—age,whentheadditionamountofSSPSwas6g/L,thecentrifugalprecipitationrateofacidicmilkbeveragewaslessthan3,thesuspensionstability
7、wascloseto0.5,anditsstabilizingeffectwasclosetopectin.WhenSSPSwasusedasstabilizingagent,theviscosityofacidmilkbeveragewaslOW.WhenpHchangedbetween3.4and4.4,theprecipitationrateofacidicmilkbeveragewas2.80—3.15。andthesuspensionstabilitywas0.47—0.49.SSPSextractedfrombeandre
8、gcanbeaddedtofoodasnaturalanti—oxidant,preservativeandthickener,andalsoasstabilizerforacidicmilkbeverage.Keywo